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Stack overflow checking with stack probes.

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This adds a libcall name, a calling convention, and settings for
emitting stack probes, and implements them for x86 system_v ABIs.
This commit is contained in:
Dan Gohman
2018-04-20 21:41:45 -07:00
parent c5b15c2396
commit 3b1d805758
20 changed files with 585 additions and 155 deletions
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32
cranelift/filetests/isa/x86/binary32.cton
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@@ -392,19 +392,37 @@ ebb0:
; asm: popl %ecx
[-,%rcx] v512 = x86_pop.i32 ; bin: 59
; Adjust Stack Pointer
; Adjust Stack Pointer Up
; asm: addl $64, %esp
adjust_sp_imm 64 ; bin: 83 c4 40
adjust_sp_up_imm 64 ; bin: 83 c4 40
; asm: addl $-64, %esp
adjust_sp_imm -64 ; bin: 83 c4 c0
adjust_sp_up_imm -64 ; bin: 83 c4 c0
; asm: addl $1024, %esp
adjust_sp_imm 1024 ; bin: 81 c4 00000400
adjust_sp_up_imm 1024 ; bin: 81 c4 00000400
; asm: addl $-1024, %esp
adjust_sp_imm -1024 ; bin: 81 c4 fffffc00
adjust_sp_up_imm -1024 ; bin: 81 c4 fffffc00
; asm: addl $2147483647, %esp
adjust_sp_imm 2147483647 ; bin: 81 c4 7fffffff
adjust_sp_up_imm 2147483647 ; bin: 81 c4 7fffffff
; asm: addl $-2147483648, %esp
adjust_sp_imm -2147483648 ; bin: 81 c4 80000000
adjust_sp_up_imm -2147483648 ; bin: 81 c4 80000000
; Adjust Stack Pointer Down
; asm: subl %ecx, %esp
adjust_sp_down v1 ; bin: 29 cc
; asm: subl %esi, %esp
adjust_sp_down v2 ; bin: 29 f4
; asm: addl $64, %esp
adjust_sp_down_imm 64 ; bin: 83 ec 40
; asm: addl $-64, %esp
adjust_sp_down_imm -64 ; bin: 83 ec c0
; asm: addl $1024, %esp
adjust_sp_down_imm 1024 ; bin: 81 ec 00000400
; asm: addl $-1024, %esp
adjust_sp_down_imm -1024 ; bin: 81 ec fffffc00
; asm: addl $2147483647, %esp
adjust_sp_down_imm 2147483647 ; bin: 81 ec 7fffffff
; asm: addl $-2147483648, %esp
adjust_sp_down_imm -2147483648 ; bin: 81 ec 80000000
; Shift immediates
; asm: shll $2, %esi